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  <div class="section" id="data-compression-and-archiving">
<span id="archiving"></span><h1>13. Data Compression and Archiving<a class="headerlink" href="#data-compression-and-archiving" title="Permalink to this headline">¶</a></h1>
<p>The modules described in this chapter support data compression with the zlib,
gzip, bzip2 and lzma algorithms, and the creation of ZIP- and tar-format
archives.  See also <a class="reference internal" href="shutil.html#archiving-operations"><em>Archiving operations</em></a> provided by the <a class="reference internal" href="shutil.html#module-shutil" title="shutil: High-level file operations, including copying."><tt class="xref py py-mod docutils literal"><span class="pre">shutil</span></tt></a>
module.</p>
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<li class="toctree-l1"><a class="reference internal" href="zlib.html">13.1. <tt class="docutils literal"><span class="pre">zlib</span></tt> &#8212; Compression compatible with <strong class="program">gzip</strong></a></li>
<li class="toctree-l1"><a class="reference internal" href="gzip.html">13.2. <tt class="docutils literal"><span class="pre">gzip</span></tt> &#8212; Support for <strong class="program">gzip</strong> files</a><ul>
<li class="toctree-l2"><a class="reference internal" href="gzip.html#examples-of-usage">13.2.1. Examples of usage</a></li>
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<li class="toctree-l1"><a class="reference internal" href="bz2.html">13.3. <tt class="docutils literal"><span class="pre">bz2</span></tt> &#8212; Support for <strong class="program">bzip2</strong> compression</a><ul>
<li class="toctree-l2"><a class="reference internal" href="bz2.html#de-compression-of-files">13.3.1. (De)compression of files</a></li>
<li class="toctree-l2"><a class="reference internal" href="bz2.html#incremental-de-compression">13.3.2. Incremental (de)compression</a></li>
<li class="toctree-l2"><a class="reference internal" href="bz2.html#one-shot-de-compression">13.3.3. One-shot (de)compression</a></li>
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<li class="toctree-l1"><a class="reference internal" href="lzma.html">13.4. <tt class="docutils literal"><span class="pre">lzma</span></tt> &#8212; Compression using the LZMA algorithm</a><ul>
<li class="toctree-l2"><a class="reference internal" href="lzma.html#reading-and-writing-compressed-files">13.4.1. Reading and writing compressed files</a></li>
<li class="toctree-l2"><a class="reference internal" href="lzma.html#compressing-and-decompressing-data-in-memory">13.4.2. Compressing and decompressing data in memory</a></li>
<li class="toctree-l2"><a class="reference internal" href="lzma.html#miscellaneous">13.4.3. Miscellaneous</a></li>
<li class="toctree-l2"><a class="reference internal" href="lzma.html#specifying-custom-filter-chains">13.4.4. Specifying custom filter chains</a></li>
<li class="toctree-l2"><a class="reference internal" href="lzma.html#examples">13.4.5. Examples</a></li>
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<li class="toctree-l1"><a class="reference internal" href="zipfile.html">13.5. <tt class="docutils literal"><span class="pre">zipfile</span></tt> &#8212; Work with ZIP archives</a><ul>
<li class="toctree-l2"><a class="reference internal" href="zipfile.html#zipfile-objects">13.5.1. ZipFile Objects</a></li>
<li class="toctree-l2"><a class="reference internal" href="zipfile.html#pyzipfile-objects">13.5.2. PyZipFile Objects</a></li>
<li class="toctree-l2"><a class="reference internal" href="zipfile.html#zipinfo-objects">13.5.3. ZipInfo Objects</a></li>
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<li class="toctree-l1"><a class="reference internal" href="tarfile.html">13.6. <tt class="docutils literal"><span class="pre">tarfile</span></tt> &#8212; Read and write tar archive files</a><ul>
<li class="toctree-l2"><a class="reference internal" href="tarfile.html#tarfile-objects">13.6.1. TarFile Objects</a></li>
<li class="toctree-l2"><a class="reference internal" href="tarfile.html#tarinfo-objects">13.6.2. TarInfo Objects</a></li>
<li class="toctree-l2"><a class="reference internal" href="tarfile.html#command-line-interface">13.6.3. Command Line Interface</a><ul>
<li class="toctree-l3"><a class="reference internal" href="tarfile.html#command-line-options">13.6.3.1. Command line options</a></li>
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<li class="toctree-l2"><a class="reference internal" href="tarfile.html#examples">13.6.4. Examples</a></li>
<li class="toctree-l2"><a class="reference internal" href="tarfile.html#supported-tar-formats">13.6.5. Supported tar formats</a></li>
<li class="toctree-l2"><a class="reference internal" href="tarfile.html#unicode-issues">13.6.6. Unicode issues</a></li>
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